Volume Damper Low-Leak OBD 3000-0BDLL-52X44 Smoke-Fire Damper Standard Features * Heavy guage

Standard Features * Heavy guage cold roll steel (same as 350 series) * Ideal for return air in the toe space areas between kitchen cabinets

Standard Features * T-Bar lay-in panel with hinged perforated face * Galvaneal steel 2x2 panel with seismic hangers * Spring push release for removal of perforated face * Round No Labor Collar sizes: 6-10"

SD52 Submittal Drawing

BD - field installable Bowtie Damper (available on even sizes 6"-14")

Designed for use in walls

Volume Damper Low-Leak OBD 3000-0BDLL-52X44 Smoke-Fire Damper Standard Features * Heavy guageh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3.